Honeywell EXPERION PKS Installation Manual page 49

If...
any part of the trace between the transmitted pulse and the returned pulse is three (3) or more
divisions from the base line (in either direction)...
Then...
the section of ControlNet trunk cable is Rejected.
If...
the terminator is producing a trace such as the following...
Then...
the terminator is Rejected.
10. Tag all rejected ControlNet trunk cable sections as rejected/failed, and take all necessary steps to
replace them..
ATTENTION
If Steps 1 through 8 are performed very carefully, Step 9 can be repeated many times for
the same length of ControlNet trunk cable without any adjustments.
Chapter 6 - Testing ControlNet Trunk Cables
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